一种基于CCSDS AOS协议的分包遥测调度算法  

A Packet Telemetry Scheduling Algorithm Based on CCSDS AOS Protocol

作　　者：戴昌昊 张德智[1] 胡倩[1] 刘建妥[1] 陈朝霞[1] 李金龙[1] DAI Chang-hao ZHANG De-zhi HU Qian LIU Jian-tuo CHEN Zhao-xia LI Jin-long(Research and Development Center, China Academy of Launch Vehicle Technology, Beijing 100076, China)

机构地区：[1]中国运载火箭技术研究院研究发展中心,北京100076

出　　处：《测控技术》2017年第9期47-49,53,共4页Measurement & Control Technology

摘　　要：目前,大部分航天器都采用了基于CCSDS协议体系的分包遥测体制,具有较好的灵活性及较高的信道利用率。但是,传统的分包遥测体制大多只利用了协议体系中的包多路复用机制,在某些应用场景下,对下行遥测数据流的控制能力显得不足。提出了一种充分利用CCSDSAOS协议信道两级复用机制的遥测数据同步调度算法,在包调度层面进行分系统遥测帧速率控制,在虚拟信道层面进行系统遥测速率控制。相比传统的分包遥测体制,本算法具有更强的灵活性。通过仿真验证了算法的可行性。At present, most of the spacecraft adopts the packet telemetry system based on CCSDS protocol sys- tem. The packet telemetry system has good flexibility and high physical channel utilization. However, most of the traditional packet telemetry systems only use packet multiplexing mechanism. In some application scenari- os, the downlink telemetry data control ability of this system is insufficient. A kind of telemetry data synchroni- zation scheduling algorithm which makes full use of the two level channel multiplexing mechanism of CCSDS AOS protocol is put forward. The subsystem telemetry frame rate control is realized in packet multiplexing layer and the system telemetry frame rate control is realized in virtual channel multiplexing layer. Compared with the traditional packet telemetry system, this algorithm has more flexibility. The algorithm has been realized by Ver- ilog HDL code. The feasibility of the algorithm is also verified.

关 键 词：CCSDS AOS 分包遥测 包多路复用 虚拟信道调度 

分 类 号：V443.1[航空宇航科学与技术—飞行器设计]